Wrench.



PATENTED NOV. 28, 1905. A. L. GRITTENDBN.

WRENCH.

.APPLIOATION FILED AUG. 26. 1905.

` inafter more a modified form of the invention.

- e UNITED sTATEs PATENT OFFICE.-

ALBERT LEROY GRITTENDEN, oF SHELLMAN, GEORGIA, AssiGNoR or ONE-HALF ToF. REID GRITTENDEN, oF SHELLMAN, GEORGIA.

WRENCH- vSpecification of Letters Patent.

Patented N ov. 28, 1905.

Application led August 26, 1905. Serial No. 275,925.

To al?, whom, it may concern:

Beit knownthat I, ALBERT LEROY CRIT- TENDEN, a citizen of the UnitedStates, resid- Y ing at Shellman, in. the county of Randolph and Stateof Georgia, have invented certain new and useful Improvements inWrenches,

- of which the following is a specification.

cient for use either as a nut or pipe wrench.

Another object resides in the provision of an exceedingly simple,inexpensive, durable, and eHicient nut or pipe'wrench.

A still further object ofthe invention is to provide a device of thecharacter stated wherein the parts thereof may be quickly assembled orreadily disassembled.

With these and other objects in view the present invention consists inthe combination and arran ement of parts, as will be hereignllydescribed, shown in the accompanying drawings, and particularly pointedout in the appended claims, it being understood that changes in theform, proportion, size, and minor details may be made within the scopeof the claims Without departing from the spirit or sacrificing any ofthe -advantages of the invention.

In the drawings, Figure 1 is a perspective view of my improved wrench.Fig. 2 is a side elevation illustrating the same applied for themanipulation of a nut, parts being shown in section. Fig. 3 is atransverse sectional view on the 'line a aI of Fig. l. Fig. 4 is alongitudinal sectional view of the strap. Fig. 5 is a side elevation,partly in section, of

. It will be observed that this jaw 2 extends upon both sides of thestock 1 and has its lower end reduced, as at 3, with, its .under faceprovided with teeth 4 for mesh with the teeth 5 of'a shank 6. The frontfacefof the jaw 2 above the reduced portion 3 thereof is also providedwith teeth 7, designed for mesh with the teeth 8l of an outer jaw 9,

which is formed integrally at one end of the aforesaid shank 6. Theteeth 8 of the outer jaw 9 terminate shortof the upper edge of Fig. 6 isa the shank 6, forming a fiat surface 10 for engagement with the flatfront face of the reduced portion 3 of the inner j aw 2. It will beobserved that the inner toothed and lsmooth or iiat face of the outerjaw tapers toward the inner jaw.

The stock 1 and the shank 6 are cou led I together by means of a strap11, whic is provided with oppositely-disposed j openings 12 and 13, theopening 12 receiving the stock 1 and the o ening 13 receiving the shank6. The stock 1 1s pivotally mounted in the opening 12 of the stra 11 bymeans of a suitable pivot-pin 14, an the teeth 4 of the reduced portion3 of the jaw 2 of the stock 1 are held normally out of engagement withthe teethv 5, formed in the u per face of the shank 6, by means of -asuitab e flat spring 15, secured at one end, by means of a suitablefastener 16, to the upper face of thestock 1, with its opposite enddirected forwardly and free for engagement with thel beveled side 17 ofthe opening 12. By reason of the beveled portion 17 of the opening 12the stock 1 may be moved upon its pivot 14 to present the teeth 4 of thereduced portion 3 of the inner jaw to the teeth 5 of the shank 6. Theshank 6 has a longitudinal bore 18A opening through its inner end forthe reception of a helical spring 19, which is prevented fromaccidentally falling out of the bore 18 by means of a suitable screw 20,fitted in the screw-threaded end 21 of the bore 19 of the shank 6.reason of this screw 2O the s ring 19 may be readily removed from thefiore 18 for any purpose desired. The purpose of this spring 19 is toforce the strap 11 and consequently the stock 1 and its jaw, toward theouter jaw 9 of the shank-6, and thereby normally hold the inner andouter jaws together or tightly upon the nut or pipe for manipulation ofthe latter two elements. In order that the spring 19 may perform thefunction just stated, I form a slot 22 in one side of the shank 6. Thisslot is arranged longitudinally of the shank and communicates with theaforesaid bore 18 ofthe shank, so that the projection 23,which isengaged with the inner face of one side of the opening 13 of the strap,may project through the said slot 22 into the said bore 18 forengagement with one end of the aforesaid helical sprin` 19 tocompressthe latter upon movement y ones hand or otherwise of the strapfrom the outer jaw 9 of the Obviously by IOO shank. Obviously,therefore, the said spring 19, being under tension by such movement ofthe strap, will as soon as the strap 11 is released by the hand orengaged with a nut or pipe immediately force the strap 11 toward theouter jaw 9, and consequently carry with it the inner jaw 2 of the stock1.

To prevent the strap 11 being accidentally disengaged from the shank, Iprovide a suitable stop 24, which isformed upon the under face of theshank 6 at the extreme inner end of the latter.

From the foregoing it will be seen that the inner and outer jaws of thestock and shank, respectively, are held normally in engagement with eachother or upon a nut or pipe through the instrumentality of the helical.spring 19, confined within the shank. It will be apparent also that thedevice may be readily used as a nut or pipe wrench and that the teeth ofthe inner jaw are held normally out of engagement with the teeth of theshank through the medium of the fiat spring 5, secured to the stock.

In Figs. 5 and 6, inclusive, there is shown a modified form of myinvention. With the exception of a few minor features this modified formof the invention is the same as that first described. In other words,the stock 1 is pivoted in the opening 12 of the strap 11, there being aflat spring 15 secured to the stock 1 and projecting into the saidopening 12 for the same purpose as the aforesaid spring 15. However, inthis modified form the inner jaw 2 is provided upon its inner beveledface with a recess 2.5, adapted to embrace the inner end of the stock 1and be removably secured thereto by means of a suitable fastener 26.Each of the inner jaws has its inner face beveled, as shown in thedrawings, so as to permit the proper engagement of the teeth of eachinner jaw with the teeth upon the adjacent face of the shank 6 and 6.Another difference in this modified form is that instead of forming theslot 22 in one side of the shank 6 I form the slot 22 in the back of theshank 6 and provide a projection 23 upon one inner face of the opening13 of the strap 11 for engagement in the slot22. This slot 2-2, as inthe other form of the instock, a strap having openings therethrough forthe reception of the stock and the shank, the shank having alongitudinal here and a longitudinal slot in comnninication with eachother, a helical spring removably arranged within the bore of the shank,a projection carried by the said strap and extending through said slotinto the bore of the shank for engagement with the said helical spring,and a flat spring secured to the stock for engagement in the openingreceiving the stock to hold the aw of the latter normally out ofengagement with said shank.

2. A wrench comprising a stock having a jaw removably fitted at one endthereof, a shank having a jaw at one end for cooperae tion with the awof the stock, a strap having openings therethrough for the reception ofthe stock and the shank, the shank having a longitudinal bore and alongitudinal slot in communication with each other, a yield ahle elementmounted within the here of the shank, means detachably connected withthe shank at one end of said bore whereby the yieldable element may beinserted in or removed from the bore, a projection carried by the saidstrap and extending through said slot into the bore of the shank forengagement with the said yieldable element, and means arranged betweenthe stock and the opening receiving the stock to held the jaw of thelatter normally out of engagement with said shank.

In testimony whereof I affix my signature in the presence of twowitnesses.

Witnesses:

A. M. CRITTENDEN, F. C. SEARS.

